package com.zeh.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.zeh.common.constant.ProductConstant;
import com.zeh.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.zeh.gulimall.product.dao.AttrGroupDao;
import com.zeh.gulimall.product.dao.CategoryDao;
import com.zeh.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.zeh.gulimall.product.entity.AttrGroupEntity;
import com.zeh.gulimall.product.entity.CategoryEntity;
import com.zeh.gulimall.product.service.AttrAttrgroupRelationService;
import com.zeh.gulimall.product.service.CategoryService;
import com.zeh.gulimall.product.vo.AttrGroupRelationVo;
import com.zeh.gulimall.product.vo.AttrRespVo;
import com.zeh.gulimall.product.vo.AttrVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zeh.common.utils.PageUtils;
import com.zeh.common.utils.Query;
import com.zeh.gulimall.product.dao.AttrDao;
import com.zeh.gulimall.product.entity.AttrEntity;
import com.zeh.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrAttrgroupRelationService relationService;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);

        // 保存基本数据
        this.save(attrEntity);

        // 保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        LambdaQueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().lambda();
        queryWrapper.eq(AttrEntity::getAttrType, "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0) {
            queryWrapper.eq(AttrEntity::getCatelogId, catelogId);
        }

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            queryWrapper.like(AttrEntity::getAttrName, key)
                    .or()
                    .eq(AttrEntity::getAttrId, key);
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);

        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map(attrEntity -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            //设置分类和分组
            if("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = relationDao.selectOne(new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().eq(AttrAttrgroupRelationEntity::getAttrId, attrEntity.getAttrId()));
                if (attrAttrgroupRelationEntity != null && attrAttrgroupRelationEntity.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelationEntity.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, respVo);

        // 设置分组信息
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = relationDao.selectOne(new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().eq(AttrAttrgroupRelationEntity::getAttrId, attrId));
            if (attrAttrgroupRelationEntity != null) {
                respVo.setAttrGroupId(attrAttrgroupRelationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelationEntity.getAttrGroupId());
                if (attrGroupEntity != null) {
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        // 设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }

        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);

        // 修改分组关联
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            relationService.saveOrUpdate(relationEntity, new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().eq(AttrAttrgroupRelationEntity::getAttrId, attr.getAttrId()));
        }

    }

    /**
     * 根据分组id查找关联的所有基本属性
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {

        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().eq(AttrAttrgroupRelationEntity::getAttrGroupId, attrgroupId));
        List<Long> attrIds = entities.stream().map(AttrAttrgroupRelationEntity::getAttrId).collect(Collectors.toList());

        if(attrIds.size() == 0 ||attrIds == null){
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.stream(vos).map((item) -> {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, attrAttrgroupRelationEntity);
            return attrAttrgroupRelationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        // 当前分组只能关联自己所属的分类里面的属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();

        // 当前分组只能关联别的分组没有引用的属性
        // 找到当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(
                new LambdaQueryWrapper<AttrGroupEntity>()
                        .eq(AttrGroupEntity::getCatelogId, catelogId)
        );
        List<Long> collect = group.stream().map((item) -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        System.out.println("1 " + collect.get(0));
        // 这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().in(AttrAttrgroupRelationEntity::getAttrGroupId, collect));
        List<Long> attrIds = groupId.stream().map((item) -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        System.out.println("2 " + attrIds.get(0));
        // 从当前分类的所有属性中移出这些属性
        LambdaQueryWrapper<AttrEntity> attrEntityLambdaQueryWrapper = new LambdaQueryWrapper<AttrEntity>();
        attrEntityLambdaQueryWrapper.eq(AttrEntity::getCatelogId, catelogId).eq(AttrEntity::getAttrType ,ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());;
        attrEntityLambdaQueryWrapper.notIn(attrIds != null && attrIds.size() > 0 , AttrEntity::getAttrId, attrIds);
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            attrEntityLambdaQueryWrapper.and((wrapper) -> {
                wrapper.like(AttrEntity::getAttrName, key)
                        .or()
                        .eq(AttrEntity::getAttrId, key);
            });
        }

        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), attrEntityLambdaQueryWrapper);
        return new PageUtils(page);
    }

}